# MI_IsDmaBusy

## C Specification

      #include <nitro/mi.h>

      BOOL MI_IsDmaBusy( u32 dmaNo )

## Description

This function checks whether the specified DMA channel is being used. A `TRUE` return value indicates that it is still busy.

## Internal Operation

Uses the following IO register: DMAn control register (0x40000B8 + 12n). (n is the DMA channel used.)

## Arguments

`dmaNo` | DMA channel used

## Return Values

Returns whether or not the specified DMA channel is being used.

## See Also

`MI_DmaCopy*, MI_WaitDma`

## Revision History

10/18/2004 Corrected C Spec.
12/01/2003 Initial version.